JP2019123872A - 有機無機ハイブリッド膜 - Google Patents
有機無機ハイブリッド膜 Download PDFInfo
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Abstract
Description
下記(イ)、(ロ)、及び(ハ)を満たす有機無機ハイブリッド膜である。
(イ)可視光線透過率が70%以上。
(ロ)波長380nmの紫外線の透過率が60%以下。
(ハ)上記有機無機ハイブリッド膜の表面の水接触角が80度以上。
下記(イ)、(ロ)、及び(ハ’)を満たす有機無機ハイブリッド膜である。
(イ)可視光線透過率が70%以上。
(ロ)波長380nmの紫外線の透過率が60%以下。
(ハ’)上記有機無機ハイブリッド膜の表面の水接触角が90度以上。
本発明の有機無機ハイブリッド膜は、セリウム酸化物と有機弗素化合物との有機無機ハイブリッド膜であって、下記(イ)、(ロ)、及び(ハ)を満たす有機無機ハイブリッド膜である。
(イ)可視光線透過率が70%以上。
(ロ)波長380nmの紫外線の透過率が60%以下。
(ハ)上記有機無機ハイブリッド膜の表面の水接触角が80度以上。
(イ)可視光線透過率が70%以上。
(ロ)波長380nmの紫外線の透過率が60%以下。
(ハ’)上記有機無機ハイブリッド膜の表面の水接触角が90度以上。
上記セリウム酸化物は、本発明の有機無機ハイブリッド膜の紫外線透過率を低くし、耐候性を高める働きをする。また耐擦傷性を高める働きをする。
参考文献:M. P. Seah and W. A. Derch, Surface and Interface Analysis 1,2(1979)
上記有機弗素化合物は、弗素・炭素結合を有する化合物であり、典型的には炭化水素などの有機化合物の1つ又は2つ以上の水素原子が弗素原子に置換された構造を有する化合物である。上記有機弗素化合物は、本発明の有機無機ハイブリッド膜に撥水機能、防汚性を付与する働きをする。
本発明の積層体は、本発明の有機無機ハイブリッド膜を含む。本発明の積層体は、通常は、任意の基材の少なくとも一方の表面の上に、本発明の有機無機ハイブリッド膜が形成された積層体である。
本発明の物品は、本発明の有機無機ハイブリッド膜を含む。本発明の有機無機ハイブリッド膜は、通常は本発明の物品の表面に形成され、典型的には本発明の物品の表面であって、特に太陽光の直射を受ける部分に形成され、本発明の物品に耐候性、及び防汚性を付与する。
本発明の有機無機ハイブリッド膜は、セリウム酸化物と有機弗素化合物を用いて生産される。本発明の有機無機ハイブリッド膜は、セリウム酸化物と有機弗素化合物を用い、任意の方法、例えば、2極スパッタリング法、マグネトロンスパッタリング法、及び反応性スパッタリング法などのスパッタリング法;真空蒸着法;イオンプレーティング法;低温プラズマ化学気相成長法、プラズマ化学気相成長法、熱化学気相成長法、及び光化学気相成長法などの化学気相成長法;ゾルゲル法、電解法、及びエマルジョン法などの液相法;及び、これらの組み合わせなどの方法を使用して生産することができる。
(イ)可視光線透過率:
JIS A5759:2008の6.4可視光線透過率試験に準拠し、島津製作所株式会社の分光光度計「SolidSpec−3700(商品名)」を使用して測定した。
JIS A5759:2008の6.7紫外線透過率試験に準拠し、島津製作所株式会社の分光光度計「SolidSpec−3700(商品名)」を使用して測定した透過率スペクトルから波長380nmにおける透過率を読み取ることで求めた。
積層体の有機無機ハイブリッド膜面について、KRUSS社の自動接触角計「DSA20」(商品名)を使用し、水滴の幅と高さとから算出する方法(JIS R 3257:1999を参照。)で測定した。
JIS A5759:2008の6.7紫外線透過率試験に準拠し、島津製作所株式会社の分光光度計「SolidSpec−3700(商品名)」を使用して測定した。
フィッシャーインスツルメンツ社の表面微小硬度試験機「PICODENTER HM500(商品名)」を使用し、テクダイヤモンド株式会社のバーコビッチダイヤモンド圧子(型番HB)を使用し、最大荷重0.1mN、荷重増加速度0.1mN/20秒、保持時間5秒、及び荷重除去速度0.1mN/20秒の条件で測定した。
(A)セリウム酸化物:
(A−1)二酸化セリウムを焼結して得た直径76.2mm、厚み5mmの円盤。株式会社高純度化学研究所製。
(B−1)ポリテトラフルオロエチレン(テトラフルオロエチレンの単独重合体)の直径76.2mm、厚み5mmの円盤。株式会社高純度化学研究所製。
(C−1)コーニング社の無機ガラス基板「イーグルXG(商品名)」。厚み0.7mm。波長380nmの紫外線の透過率は94%、可視光線透過率は91%、波長300〜380nmの紫外線の透過率は93%、黄色度指数は0.5であった。
(1)上記(C−1)を、APP社の大気圧プラズマ処理装置「MyPL Auto200(商品名)」を使用し、0.5体積%の酸素(O2)を含むアルゴンガス(アルゴンガスを6リットル/分の体積流量、酸素(O2)を30ミリリットル/分の体積流量で使用)を放電ガスとし、投入電力180W、スキャン回数0.5往復、スキャン速度20mm/秒、電極と被処理面との距離2mmの条件で表面処理を行った。
(2)次にVICインターナショナル社の2極スパッタリング装置を使用し、上記(A−1)、及び上記(B−1)をターゲットとして、成膜圧力1Pa、導入ガスは100体積%のアルゴンガス(表には「Ar」と表記した。)、導入ガスの体積流量10sccm、上記(C−1)とターゲットとの距離は何れも5cm、投入電力(周波数13.56MHz)は上記(A−1)側540W、上記(B−1)側1.3Wの条件で同時スパッタ成膜を行った。なお予備実験では上記(A−1)は投入電力200Wで4.7nm/分の成膜速度、上記(B−1)は投入電力100Wで5.0nm/分の成膜速度であった。
(3)続いて、温度100℃で1時間のアニール処理を行い、上記(C−1)の上に有機無機ハイブリッド膜の形成された積層体を得た。
(4)上記工程(3)において得た積層体の有機無機ハイブリッド膜について、EDX分析を行い、膜の組成を確認した。EDX分析は、株式会社日立製作所のS−4300型SEMに、株式会社堀場製作所のEMAX ENERGY型EDX分析装置が付属した装置を使用し、加速電圧9kV、エミッション電流15μA、焦点距離15mm、及び倍率600倍の条件で行った。更に上記試験(イ)〜(ホ)を行った。結果を表1に示す。
成膜時の投入電力を表1に示すように変更したこと以外は、例1と同様に行った。結果を表1に示す。
(C)基材として上記(C−1)の替わりにリケンテクノス株式会社のハードコート積層フィルム「REPTY DC100N(商品名)」(全厚み250μm、有機無機ハイブリッド膜形成面の上記(ホ)硬さの値は0.52KN/mm2)を使用し、成膜時の投入電力を例3と同じに変更したこと以外は、例1と同様にして、有機無機ハイブリッド膜を形成した。上記試験(イ)〜(ホ)を行った。試験の結果は、可視光線透過率80%、紫外線透過率1(波長380nmの紫外線の透過率)36%、水接触角116度、紫外線透過率2(波長300〜380nmの紫外線の透過率)8%、及び該有機無機ハイブリッド膜の表面の上記(ホ)硬さの値は0.66KN/mm2であった。
(C)基材として上記(C−1)の替わりに二軸延伸ポリエチレンテレフタレートフィルム(全厚み250μm、有機無機ハイブリッド膜形成面の上記(ホ)硬さの値は0.54KN/mm2)を使用し、成膜時の投入電力を例3と同じに変更したこと以外は、例1と同様にして、有機無機ハイブリッド膜を形成した。上記試験(イ)〜(ホ)を行った。試験の結果は、可視光線透過率81%、紫外線透過率1(波長380nmの紫外線の透過率)45%、水接触角121度、紫外線透過率2(波長300〜380nmの紫外線の透過率)23%、及び該有機無機ハイブリッド膜の表面の上記(ホ)硬さの値は0.62KN/mm2であった。
2:スパッタガス導入口
3:排気口
4:二酸化セリウムのターゲット
5:ポリテトラフルオロエチレンのターゲット
6:スパッタテーブル
7:基材
8:ターゲット4側のシャッター
9:ターゲット5側のシャッター
Claims (5)
- セリウム酸化物と有機弗素化合物との有機無機ハイブリッド膜であって、
下記(イ)、(ロ)、及び(ハ)を満たす有機無機ハイブリッド膜。
(イ)可視光線透過率が70%以上。
(ロ)波長380nmの紫外線の透過率が60%以下。
(ハ)上記有機無機ハイブリッド膜の表面の水接触角が80度以上。
- セリウム酸化物と有機弗素化合物との有機無機ハイブリッド膜であって、
下記(イ)、(ロ)、及び(ハ’)を満たす有機無機ハイブリッド膜。
(イ)可視光線透過率が70%以上。
(ロ)波長380nmの紫外線の透過率が60%以下。
(ハ’)上記有機無機ハイブリッド膜の表面の水接触角が90度以上。
- 上記有機弗素化合物が弗素系樹脂を含む請求項1又は2に記載の有機無機ハイブリッド膜。
- 請求項1〜3の何れか1項に記載の有機無機ハイブリッド膜を含む積層体。
- 請求項1〜3の何れか1項に記載の有機無機ハイブリッド膜を含む物品。
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